Sugar process



R. E. POSPISIL AND E. KUREKv SUGAR PROCESS.

. APPLICATION FILED DEC. 27. I9I5. 1,352,084, PatenteSe/pt. 7 1929 W/ rfa/565@ unirse srares RUDOLPH E. POSPISIL, 0F CHIPPEWA FALLS CONSIN, ASSIGNORS 0F TWO-TI-IIRDS TO SAID POSIPISIL KUREK.

, AND EDMUND KUREK, 0F MADISON, WIS- .AND ONE-THIRD TO SAID SUGAR rRooEss.

lSpecification of Letters Patent.

Application ed Dece'mber 27, 1915. Serial No. 68,636.

To all whom t may concern Be it known that we, RUDOLPH E. PosPIsIL, a citizen of the United States, and resident of Chippewa Falls, in the county of Chippewa and State of Wisconsin, and EDMUND KUREK, a citizen of the United States, and residentof Madison, in the county of Dane and State of lVisconsin, have invented new and useful .Improvements in Sugar Processes, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification. v

This invention has for its object toimprove u on the sugar process covered by United tates Letters Patent No. 1,028,272, granted June 4, 1912, to Rudolph E. Pospisil, and effect a greater recovery of granulated white sugar of high purity.

The present invention relates to a large extent to the purifying of the massecuite by injecting water during thetreatment in the vacuum pan and also during crystallization While the crystallizers are in motion in order to extract the sugar from the molasses.

With'the above and other objects in view the invention consists in the sugar process as herein claimed and all equivalents.

Reference will be made to the accompanying drawing which is a diagram of the process of this invention representing the several strikes by lines connecting the various mechanisms in the order that the juice in its various stages travels through them.

In conducting the sugar making process of this inve'ntion raw juice is first boiled in vacuum pan l, Where it is treated with injections of water while its temperature is being raised so as to volatilize or expel such impurities asammonia, ammonium carbonate, acetate, and to decompose other nitrogenous matters, raising the purity of the massecuite in the vacuum pan.

This treatment is repeated many times until the massecuite is finished, when it is dropped into a mixer 2 from which it passes to a 'centrifugal separator 3. The sugar from the centrifugal separator 3, testing 98-99 purity, is melted in melter 4 and after being treated and 'Hltered as usual is passed to a second vacuum pan 5 where it is boiled again to massecuite and dropped into mixer 6 and then into centrifugal separator 7. Here the sugar crystals are separated from the syrup as pure, White granulated sugar of -the purity of from 99-99-5 completing the first strike, while the syrup and the Wash water continue through the process, the wash water being returned to the vacuum pan 5 as part of the same strike, while the syrup from centrifugal 7 is delivered to vacuum pan la, where it meets the raw syrup from centrifugal separator 3 to begin the second strike.

In the second strike these syrups from the separator 3 and centrifugal 7 are boiled in vacuum pan V1a to form crystals and as soon as the crystals are formed the Water action or injection treatment is repeatedly used the same as with the raw juice in the lirst strike. lVhen the massecuite from the second raw syrup is finished it is dropped into the mixer 2a and then into centrifugal separator 3B and the sugar from v centrifugal separator 3a passes to the melter 4a Where it is melted. The juice or-liquid from melter la after being treated and filtered as usual is passed to vacuumpan a where it is boiled to a massecuite and is dropped into mixer 6a and centrifugal separator 7a where the sugar crystals are separated and washed with water and dried to complete the second strike of white, granulated sugar of the same quality as the first strike. A part of the raw syrup of the second strike from centrifugal separator 3a and all of the white sugar syrup of the second strike from centrifugal separator 7a are drawn together into the vacuum pan 1b to begin the third strike.'

These two mixed Syrups from separators 3a and 71 respectively are boiled in vacuu'm pan lb to form crystals and as soon as the crystals are formed the water injection takes place again and is repeated until finished as previously mentioned. As soon as the massecuite is finished it is dropped into crystallizers 8b Where it begins to thicken, and thereupon the Water injection is used during the time the crystallizers are in motion and is continued as long as necessary to prohibit or stop the crystals from taking on the impurities. When this massecuite is finished 1t 1s dropped into mixer 2b and from mixer 2b to centrifugal separator 3b. The crystals in centrifugal separator 3b are separated from the residue or molasses formed thereon and are passed into melter 41? *Where they are melted and /mixed with high raw juice. rlhis Patented sept. 7,1920.

mixture in melter 4b is then treated, filtered and passed into vacuum pan 5b and through mixer 6b and centrifugal separator 7 b Where trifugal separator 3" of the thirdstrike are drawn together in vacuum pan 1c and boiled down to a thickness or string Which is known by the name. of blank. The Water action or injection is applied as before during the boiling in vacuum .pan lc for the fourth strike to volatilize and expel the impurities. When this is finished it is dropped into the crystallizers 8c and Water injection is again used While the crystalliZers are in motion.y The finished massecuite is dropped into mixer 2 and centrifugal separator 3c Where a dark colored sugar is separated which is melted in the melter 4: to completerthe fourth strike.. A part of this dark sugar from melter 4 is mixed with the raw juice in Vacuum pan l of the'irst strike to be boiled over again While the other part of the dark sugar from melter 4 is mixed with the second raw syrup in vacuum pan la' in the second strike to be boiled over again. The syrup from centrifugal separator 3c is being constantly'used to raise the purity of the molasses. The syrup from the centrifugal separator 3a of the second strike and the molasses from centrifugal separator 3b of the third strike are being boiled over many times until all of the sugar is extracted, all of the by-products or dark sugar being used for mixing with high and lo7 raw syrups and boiled over again.\

ByY means of this process -all of the `sugar from the molasses is extracted as a pure high' quality granulated White sugar.

What We claim as newv and desire to secure by Letters Patent is:

1. The process of making White granulated sugar Which consists in treating the l raw juice to recover the first strike of sugar therefrom, boiling in a vacuum pan the Syrups from the irst strike and a part of the dark sugar from the blank of a later strike, subjecting the same to Water injections and raising the temperature to remove impurities, separating the crystals from the syrup, melting them and boiling the melted crystals in a vacuum pan to a massecuite and recovering the crystals therefrom. Y

2. The process of producing White granulated sugar which consists in obtaining a first and second strike of sugar, boiling in a vacuum pan a part of the raw syrup from the second strike and all of the White sugar syrup fromthe second strike to form crystals, injecting Water in the vacuum pan as soon as the crystals are formed to remove impurities therefrom, separating the crystals from the residue, and mixing these crystals in a melter with raW juice, boiling the mix ture from the melter in a vacuum pan and recovering the sugar therefrom.

3, The process of producing granulated White sugar Which consists 1n obtaining three strikes of sugar, boiling in a vacuum pan the syrup from the second strike and the molasses from the third strike to form blank, injecting Water in the blank during the boiling so as to remove impurities there from, treating the massecuite in crystallizers with Water injections during the action of the crystallizers, recovering dark sugar crystals and melting them and returning a part to the raw syrup of the first strike and a part to the raW syrup of the second strike `to be boiled over in the vacuum pan there- With.

,4. The process of making White granu- -lated sugar which consists in treating the raW juice to recover the first strike of sugar therefrom, boiling in a vacuum pan the raw syrup from the first strike and the White syrup from the first strike, subjecting the same to Water injections and raising the temperatures to remove impurities, separating the crystals from the syrup, melting them, boiling the melted crystals in a vacuum pan, to a massecuite, and recovering the crystals 'therefrom In-.testimony whereof, We aflix our signatures, in presence of tvvo Witnesses.

yRUDOLPH E. POSPISIL. Vitnesses as to Rudolph E. Pospisil:

J HOWARD BRoWNE, KATIE HAYES.

EDMUND KUREK. Vitnesses as to Edmund Kurek:

V. L. WooDwARD, f J. Gr. KROKEN. 

